`\left` and `\right` outside matrix

[fwkoch]

\left| \begin{matrix}
\widehat{\mathbf{x}} & \widehat{\mathbf{y}} & \widehat{\mathbf{z}} \\
0 & 0 & 1 \\
\frac{u}{\sqrt{u^{2} + v^{2} + w^{2}}} & \frac{v}{\sqrt{u^{2} + v^{2} + w^{2}}} & \frac{w}{\sqrt{u^{2} + v^{2} + w^{2}}} \\
\end{matrix} \right|

Should look like:

But looks like: